-er c-- ccc ccd cce ccf ccm cco ccp ccr cct ccx cdc cdd cde cdf cdm cdo cdp cdr cdt cdx ce- cec ced cee cef cem ceo cep cer cet cex cfc cfd cfe cff cfm cfo cfp cfr cft cfx cmc cmd cme cmf cmm cmo cmp cmr cmt cmx co- coc cod coe cof com coo cop cor cot cox cpc cpd cpe cpf cpm cpo cpp cpr cpt cpx crc crd cre crf crm cro crp crr crt crx ctc ctd cte ctf ctm cto ctp ctr ctt ctx cxc cxf cxo cxp cxr cxt cxx dcc dcd dce dcf dcm dco dcp dcr dct dcx ddc ddd dde ddf ddm ddo ddp ddr ddt ddx de- dec ded dee def dem deo dep der det dex dfc dfd dfe dff dfm dfo dfp dfr dft dfx dmc dmd dme dmf dmm dmo dmp dmr dmt dmx doc dod doe dof dom doo dop dor dot dox dpc dpd dpe dpf dpm dpo dpp dpr dpt drc drd dre drm dro drp drr drt drx dtc dtd dte dtf dtm dto dtp dtr dtt dtx dxc dxd dxo dxp dxr dxt dxx ec- ecc ecd ece ecf ecm eco ecr ect ecx ed- edc edd ede edf edm edo edp edr edt edx eec eed eee eef eem eeo eep eer eet eex ef- efc efd efe eff efm efo efp efr eft efx em- emc emd eme emf emm emo emp emr emt emx eo- eoc eod eoe eof eom eoo eop eor eot ep- epc epd epe epf epm epo epp epr ept epx erc erd ere erf erm ero erp err ert etc etd ete etf etm eto etp etr ett etx ex- exc exd exe exo exp exr ext exx fcc fcd fce fcf fcm fco fcp fcr fct fcx fdc fdd fde fdf fdm fdo fdp fdr fdt fdx fec fed fee fef fem feo fep fer fet fex ffc ffd ffe fff ffm ffo ffp ffr fft ffx fmc fmd fme fmf fmm fmo fmp fmr fmt fmx foc foe fof fom foo fop for fot fox fpc fpd fpe fpm fpo fpp fpr fpt fpx frc frd fre frf frm fro frp frr frt ftc ftd fte ftf ftm fto ftp ftr ftt ftx fxe fxm fxp fxr fxt fxx m-f m-o m-r mc- mcc mcd mce mcf mcm mco mcp mcr mct mcx mdc mdd mde mdf mdm mdo mdp mdr mdt mdx mec med mee mef mem meo mep mer met mex mfc mfd mfe mff mfm mfo mfp mfr mft mmc mmd mme mmf mmm mmo mmp mmr mmt mmx moc mod moe mof mom moo mop mor mot mox mpc mpd mpe mpf mpm mpo mpp mpr mpt mpx mrc mrd mre mrf mrm mro mrp mrr mrt mrx mtc mtd mte mtf mtm mto mtp mtr mtt mtx mxc mxd mxp mxr oc- occ ocd ocf ocm oco ocp ocr oct ocx odc odd ode odf odm odo odp odr odt oec oed oee oef oem oeo oep oer oet oex of- ofc ofd ofe off ofm ofo ofp ofr oft ofx om- omc omd ome omf omm omo omp omr omt omx oo- ooc ood oof oom ooo oop oor oot oox op- opc opd ope opf opm opo opp opr opt opx or- orc ord ore orf orm oro orp orr ort orx ot- otc otd ote otf otm oto otp otr ott ox- oxc oxf oxo oxt oxx p-p pcc pcd pce pcf pcm pco pcp pcr pct pcx pdc pdd pde pdf pdm pdo pdp pdr pdt pdx pec ped pee pef pem peo pep per pet pex pfc pfd pfe pff pfm pfo pfp pfr pft pfx pmc pmd pme pmf pmm pmo pmp pmr pmt pmx poc pod poe pof pom poo pop por pot pox ppc ppd ppe ppf ppm ppo ppp ppr ppt ppx prc prd pre prf prm pro prp prr prt prx pt- ptc ptd pte ptf ptm pto ptp ptr ptt ptx pxc pxe pxm pxr pxt rcc rcd rce rcf rcm rco rcp rcr rct rcx rdc rdd rde rdf rdm rdo rdp rdr rdt rdx re- rec red ree ref rem reo rep rer ret rex rfc rfd rfe rff rfm rfo rfp rfr rft rmc rmd rme rmf rmm rmo rmp rmr rmt rmx roc rod roe rof rom roo rop ror rot rox rpc rpd rpe rpf rpm rpo rpp rpr rpt rpx rrc rrd rrf rrm rrp rrr rrt rtc rtd rte rtf rtm rto rtp rtr rtt rtx rxp rxr t-x tcc tcd tce tcf tcm tco tcp tcr tct tcx tdc tdd tde tdf tdm tdo tdp tdr tdt tdx te- tec ted tee tef tem teo tep ter tet tex tfc tfd tfe tff tfm tfo tfp tfr tft tfx tmc tmd tme tmf tmm tmo tmp tmr tmt tmx to- toc tod toe tof tom too top tor tot tox tpc tpd tpe tpf tpm tpo tpp tpr tpt tpx trc trd tre trf trm tro trp trr trt trx ttc ttd tte ttf ttm tto ttp ttr ttt ttx txe txf txt xcd xcf xcp xcr xcx xdc xde xdf xdm xdr xdt xed xee xem xep xer xet xex xfe xfm xft xfx xmc xmd xmf xmm xmo xmp xmr xmt xmx xoc xod xof xom xoo xop xor xot xox xpc xpd xpe xpf xpm xpo xpp xpt xrc xrd xrf xrt xrx xtc xtf xtm xtp xtr xtx xxo xxp xxx

c-cd cccc cccf cccm cccp ccdc ccdf ccdm ccdp ccdr cced ccee ccfc ccfd ccff ccmc ccmd ccmm ccmp ccoc ccod ccom ccpe ccpm ccpp ccpr ccrc ccre ccrf ccrp ccrt cctc cctt cd-e cd-r cddr cdec cdef cder cdex cdfe cdmf cdom cdot cdre cec- cece cecm ceco cecp cect cedd cede cedo cedt ceec ceem cef- cefc ceme cemm cemp cemr ceop ceor cepc cepe cepo